154 
Cymin d is cayen n cn sis 
Cuvier, Reg. An. i, 1817, 319 ; ib. ed. 2, 331. A ig. Zodl. 
Journ. i“ 18*2-, 323, 337.— Stephens, Zodl. xiii, pt. 2, 18—, 18 .— Lesson, Man. x, 
1828, 91; Tr. Orn. 1831, 55, pi. 13, fig. 2.— Lafresn. Mag. Zool. pi. 22.— 
Kaup, Class. Siiug. u. Yog. 1844, 123.— Gray, Gen. B. 1845, 25; Hand List, 
i, 1869, 27.— Bonap. Consp. Av. i, 1850, 20.-Y. d. Hoev. Hanclb. Dierk. 
1855, 809.— Stkickl. Orn. Syn. i, 1855, 128.— Burm. Tb. Bras, ii, 18o6, 107. 
Lawr. Ann. Lyc. N. Y. 1861, p. — (New Granada); ib. 1868, 134 (Gull ot 
Nieoya, Costa Rica).— Schleg. Mns. Pays-Bas, Pernes, 1862, 9; Rev. Acc. 
1873, 136.— LPot. Ois. Trinidad, 1866, 34.— Sclater, P. Z. S. 1868, b29 
(Yenezuela).— Scl. & Salv. P. Z. S. 1870, 215 (Veragua); ib. 838, (coast 
Honduras); Nom. Neotr. 1873, 122.— Finsch, P. Z. 8. 1870, p. — (Trinidad).— 
Pelz. Orn. Bras. 1871, 5, 398.— Ridgw. Pr. Bost. Soc. N. H. 18/3, oo. 
Astur cayennensis Spin, Av. Bras, i, 1824, pi. 8c. 
Buteo cayennensis Less. Man. Orn. i, 1828, 103. ^ ^ _ , 
Odontriorclns cayennensis Kaup, Class. Siiug. u. Yog. 1844, 124; Contr. Orn. IsoO, / s. 
Leptodon cayennensis Sharpe, Cat. Acc. B. M. 1874, 333. 
Asturina cyanopus Vieill. Enc. M6th. iii, 1823, 1261. . ... 
Falco palliatus Max. in Temni. PI. Col. i, 1823, pi. 204 (juv.); Beitr. in, l5o0, 14s. 
Buteo palliatus Less. Man. Orn. i, 1828, 103. 
Cymindis buteonides Less. Tr. Orn. 1831, 55. 
Cayenne Falcon Lath. Syn. i, 1781, 59. 
Petit Autour de Cayenne Buff. PI. Enl. i, 473. 
Sab .—Tropical America, on the Atlantic side, from Brazil toMirador, 
Mexico. West Indies f (Sharpe). 
Wing, 11.25-13.C0; tail, 9.70-10.50 jculmen,0.80-1.05; tarsus, 1.40-1.<o; 
middle toe, 1.50-1.75. Fourth, fifth, or sixth quill longest ; first shorter 
than the ninth. Lower parts usually entirely white, but sometimes with 
narrow dusky streaks on the breast and sides, and occasionally (in me- 
lanistic young birds) with broad stripes or longitudinal spots ot blackish 
over entire lower surface. Above plain plumbeous, plumbeous-black, 
brownish-black or blackish-brown (the latter color usually in the younger 
stage and variegated with ocliraceous,) the head usually lighter (generally 
pale ash-gray or pure white), but sometimes (in those individuals which 
are heavily striped beneath) almost wholly black, lail broadly banded 
with black and gray or black and brown. Adult :—Above very dark 
bluish-plumbeous, approaching black anteriorly, with a faint reflection 
of bottle-green in certain lights; remiges indistinctly bauded with lighter 
plumbeous. Head and neck plain tine bluish-plumbeous or pearl-gray, 
darker on the pileum and fading into white on the thioat. Beneath 
entirely'immaculate pure white. Tail deep black, narrowly tipped with 
white, and crossed by three rather narrow bands of bluish-gray. Young.— 
Light phase :—Above dusky brown, approaching black anteriorly , the 
remiges indistinctly banded with dusky. Head and neck usually almost 
wholly' pure white, the pileum more or less spotted with blackish-brovn. 
Lower parts white. Tail brownish-gray or brownish-white, crossed by 
three bands of black* Barh phase ( Melanisticf) .-—Upper parts as in 
the last, but lower parts striped more or less broadly with blackish, 
and the head and neck (except the throat) uniform blackish like the 
back. 
A young specimen from Panama in Mr. Lawrence’s collection, agree¬ 
ing with stage III of the above diagnosis, calls to mind Temmiuck’s PI. 
Col. 270; biit it is not so dark beneath as the plate referred to, has no 
rufous on the nape, and has white streaks on the throat. 
"Another phase (younger f) is similar, but the lesser wing-coverts are much mixed 
with white and all the feathers of the upper parts are tipped with pale buff or fulvous. 
Toe black bands of the tail only about half as wide as the interspaces, aud the head 
pure white, with only a few touches ot dusky on the occiput. 
